1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 1998-2010,2016 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Juergen Pfeifer, 1995,1997 * 32 ****************************************************************************/ 33 34 #include "form.priv.h" 35 36 MODULE_ID("$Id: fld_current.c,v 1.16 2020/05/24 01:40:20 anonymous.maarten Exp $") 37 38 /*--------------------------------------------------------------------------- 39 | Facility : libnform 40 | Function : int set_current_field(FORM * form,FIELD * field) 41 | 42 | Description : Set the current field of the form to the specified one. 43 | 44 | Return Values : E_OK - success 45 | E_BAD_ARGUMENT - invalid form or field pointer 46 | E_REQUEST_DENIED - field not selectable 47 | E_BAD_STATE - called from a hook routine 48 | E_INVALID_FIELD - current field can't be left 49 | E_SYSTEM_ERROR - system error 50 +--------------------------------------------------------------------------*/ 51 FORM_EXPORT(int) 52 set_current_field(FORM *form, FIELD *field) 53 { 54 int err = E_OK; 55 56 T((T_CALLED("set_current_field(%p,%p)"), (void *)form, (void *)field)); 57 if (form == 0 || field == 0) 58 { 59 RETURN(E_BAD_ARGUMENT); 60 } 61 else if ((form != field->form) || Field_Is_Not_Selectable(field)) 62 { 63 RETURN(E_REQUEST_DENIED); 64 } 65 else if ((form->status & _POSTED) == 0) 66 { 67 form->current = field; 68 form->curpage = field->page; 69 } 70 else 71 { 72 if ((form->status & _IN_DRIVER) != 0) 73 { 74 err = E_BAD_STATE; 75 } 76 else 77 { 78 if (form->current != field) 79 { 80 if (form->current && !_nc_Internal_Validation(form)) 81 { 82 err = E_INVALID_FIELD; 83 } 84 else 85 { 86 Call_Hook(form, fieldterm); 87 if (field->page != form->curpage) 88 { 89 Call_Hook(form, formterm); 90 err = _nc_Set_Form_Page(form, (int)field->page, field); 91 Call_Hook(form, forminit); 92 } 93 else 94 { 95 err = _nc_Set_Current_Field(form, field); 96 } 97 Call_Hook(form, fieldinit); 98 (void)_nc_Refresh_Current_Field(form); 99 } 100 } 101 } 102 } 103 RETURN(err); 104 } 105 106 /*--------------------------------------------------------------------------- 107 | Facility : libnform 108 | Function : int unfocus_current_field(FORM * form) 109 | 110 | Description : Removes focus from the current field. 111 | 112 | Return Values : E_OK - success 113 | E_BAD_ARGUMENT - invalid form pointer 114 | E_REQUEST_DENIED - there is no current field to unfocus 115 +--------------------------------------------------------------------------*/ 116 FORM_EXPORT(int) 117 unfocus_current_field(FORM *const form) 118 { 119 T((T_CALLED("unfocus_current_field(%p)"), (const void *)form)); 120 if (form == 0) 121 { 122 RETURN(E_BAD_ARGUMENT); 123 } 124 else if (form->current == 0) 125 { 126 RETURN(E_REQUEST_DENIED); 127 } 128 _nc_Unset_Current_Field(form); 129 RETURN(E_OK); 130 } 131 132 /*--------------------------------------------------------------------------- 133 | Facility : libnform 134 | Function : FIELD *current_field(const FORM * form) 135 | 136 | Description : Return the current field. 137 | 138 | Return Values : Pointer to the current field. 139 +--------------------------------------------------------------------------*/ 140 FORM_EXPORT(FIELD *) 141 current_field(const FORM *form) 142 { 143 T((T_CALLED("current_field(%p)"), (const void *)form)); 144 returnField(Normalize_Form(form)->current); 145 } 146 147 /*--------------------------------------------------------------------------- 148 | Facility : libnform 149 | Function : int field_index(const FIELD * field) 150 | 151 | Description : Return the index of the field in the field-array of 152 | the form. 153 | 154 | Return Values : >= 0 : field index 155 | -1 : fieldpointer invalid or field not connected 156 +--------------------------------------------------------------------------*/ 157 FORM_EXPORT(int) 158 field_index(const FIELD *field) 159 { 160 T((T_CALLED("field_index(%p)"), (const void *)field)); 161 returnCode((field != 0 && field->form != 0) ? (int)field->index : -1); 162 } 163 164 /* fld_current.c ends here */ 165